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eruption
7 dictionary results for: eruption
Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This
e·rup·tion       [i-ruhp-shuhn] Pronunciation Key
–noun
1.an issuing forth suddenly and violently; outburst; outbreak.
2.Geology. the ejection of molten rock, steam, etc., as from a volcano or geyser.
3.something that is erupted or ejected, as molten rock, volcanic ash, or steam.
4.Pathology.
a.the breaking out of a rash or the like.
b.a rash or exanthem.
[Origin: 1375–1425; late ME < L éruptiōn- (s. of éruptiō). See erupt, -ion]

—Related forms
e·rup·tion·al, adjective
Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
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American Heritage Dictionary - Cite This Source - Share This
e·rup·tion       (ĭ-rŭp'shən)  Pronunciation Key 
n.  
    1. The act or process of erupting.
    2. An instance of erupting.
    3. An appearance of a rash or blemish on the skin.
    4. Such a rash or blemish.
  2. A sudden, often violent outburst.
    1. An appearance of a rash or blemish on the skin.
    2. Such a rash or blemish.
  4. The emergence of a tooth through the gums.

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The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Online Etymology Dictionary - Cite This Source - Share This
eruption 
1555, from L. eruptionem (nom. eruptio) "a breaking out," from stem of erumpere "break out, burst forth," from ex- "out" + rumpere "to break, rupture" (see rupture).

Online Etymology Dictionary, © 2001 Douglas Harper
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WordNet - Cite This Source - Share This
eruption

noun
1. the sudden occurrence of a violent discharge of steam and volcanic material [syn: volcanic eruption] 
2. symptom consisting of a breaking out and becoming visible 
3. (of volcanos) pouring out fumes or lava (or a deposit so formed) 
4. a sudden violent spontaneous occurrence (usually of some undesirable condition); "the outbreak of hostilities" [syn: outbreak] 
5. a sudden very loud noise [syn: bang] 
6. the emergence of a tooth as it breaks through the gum 

WordNet® 3.0, © 2006 by Princeton University.
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The American Heritage Science Dictionary - Cite This Source - Share This
eruption       (ĭ-rŭp'shən)  Pronunciation Key 
The release of gas, ash, molten materials, or hot water into the atmosphere or onto the Earth's surface from a volcano or other opening in the Earth's surface.

The American Heritage® Science Dictionary
Copyright © 2002 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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American Heritage Stedman's Medical Dictionary - Cite This Source - Share This

eruption e·rup·tion (ĭ-rŭp'shən)
n.

  1. An appearance of a rash or blemish on the skin.
  2. Such a rash or blemish.
  3. The emergence of a tooth through the gums.
e·rup'tive (-tĭv) adj.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Webster's Revised Unabridged Dictionary - Cite This Source - Share This

Eruption

E*rup"tion\, n. [L. eruptio, fr. erumpere, eruptum, to break out; e out + rumpere, to break: cf. F. ['e]ruption. See Rupture.]

1. The act of breaking out or bursting forth; as: (a) A violent throwing out of flames, lava, etc., as from a volcano of a fissure in the earth's crust. (b) A sudden and overwhelming hostile movement of armed men from one country to another. --Milton. (c) A violent commotion.

All Paris was quiet . . . to gather fresh strength for the next day's eruption. --W. Irving.

2. That which bursts forth.

3. A violent exclamation; ejaculation.

He would . . . break out into bitter and passionate eruditions. --Sir H. Wotton.

4. (Med.) The breaking out of pimples, or an efflorescence, as in measles, scarlatina, etc.

Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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